Why not just reduce the size of the nuclear navy, while maintaining the same recruiting goals. Same number of people, fewer ships, more leeway on manning.
I always get leery whenever I hear "reduce the number of ships/subs/planes/Marines/etc.".
At any given moment, there is a submarine on station in
each of at least four different geographical areas. (And sometimes more than four areas, and sometimes many more than just one submarine in a given area.) In addition to this, there are a number of submarines in drydock at any given point in time. And in between drydock and deployment periods, a submarine has a whole host of training/inspections/certifications that it has to accomplish. And golly, every once in a while, it's nice if a submarine actually gets to pull in and sit in home port for a brief little bit so its sailors can spend time with their families.
So just how many (or more to the point, how FEW) submarines do you believe it takes to cover all of these bases? Try playing the role of Admiral on this, and see how many chess pieces are really required just to stay in the game here.
Or should we maybe just draw down to the size of, say, the Iranian Navy? Or maybe the French Navy would be a 'good enough' model? I'll spare the long and detailed rant on this and get straight to the point: there is a definite (and often forgotten) deterrent value in the size of our Navy. As a pertinent analogy, remember that criminals look for soft targets that they're confident they can beat; nobody wants to get into a fight where they know that they're just going to get their *** kicked.
[Their "asterisk" kicked, get it?]But the bottom line is that cutting the number of ships isn't really a viable option.
Of course, from the stories I've heard of surface ship manning, they could spare some people for us submariners.
As an MMC(SS/SW), I've seen the surface Navy - and thank you, but I'd rather be short handed...

what about bringing back diesel boats?
The debate on this is on-going. My personal line of thought is that a handful of diesel boats for close-to-home defense is probably worth some merit.
I'm still a big fan of the theory back in the Ronnie Reagan Cold-War-Spending days - bring four Nukes into the program for each job vacancy you have, and let the best one out of those four pull himself to the top and reach the fleet with a Nuclear NEC (and an enlistment bonus) of his very own.
Just my own thoughts...
Peace,
- Greg